825842 has 8 divisors (see below), whose sum is σ = 1257456. Its totient is φ = 406692.

The previous prime is 825829. The next prime is 825857. The reversal of 825842 is 248528.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 825842.

It is an unprimeable number.

825842 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2948 + ... + 3215.

It is an arithmetic number, because the mean of its divisors is an integer number (157182).

2⁸²⁵⁸⁴² is an apocalyptic number.

825842 is a deficient number, since it is larger than the sum of its proper divisors (431614).

825842 is a wasteful number, since it uses less digits than its factorization.

825842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6232.

The product of its digits is 5120, while the sum is 29.

The square root of 825842 is about 908.7584937705. The cubic root of 825842 is about 93.8207690836.

The spelling of 825842 in words is "eight hundred twenty-five thousand, eight hundred forty-two".